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1  /* ------------------------------------------------------------------
2   * Copyright (C) 1998-2009 PacketVideo
3   *
4   * Licensed under the Apache License, Version 2.0 (the "License");
5   * you may not use this file except in compliance with the License.
6   * You may obtain a copy of the License at
7   *
8   *      http://www.apache.org/licenses/LICENSE-2.0
9   *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
13   * express or implied.
14   * See the License for the specific language governing permissions
15   * and limitations under the License.
16   * -------------------------------------------------------------------
17   */
18  /****************************************************************************************
19  Portions of this file are derived from the following 3GPP standard:
20  
21      3GPP TS 26.173
22      ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec
23      Available from http://www.3gpp.org
24  
25  (C) 2007, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
26  Permission to distribute, modify and use this file under the standard license
27  terms listed above has been obtained from the copyright holder.
28  ****************************************************************************************/
29  /*
30  
31   Filename: e_pv_amrwbdec.h
32   Funtions:
33  
34  
35       Date: 05/03/2007
36  
37  ------------------------------------------------------------------------------
38   REVISION HISTORY
39  
40  
41   Description:
42  ------------------------------------------------------------------------------
43  */
44  
45  /*----------------------------------------------------------------------------
46  ; CONTINUE ONLY IF NOT ALREADY DEFINED
47  ----------------------------------------------------------------------------*/
48  #ifndef E_PV_AMRWBDEC_H
49  #define E_PV_AMRWBDEC_H
50  
51  /*----------------------------------------------------------------------------
52  ; INCLUDES
53  ----------------------------------------------------------------------------*/
54  
55  #include "pvamrwbdecoder_cnst.h"             /* coder constant parameters */
56  #include "dtx.h"
57  
58  /*----------------------------------------------------------------------------
59  ; MACROS
60  ; Define module specific macros here
61  ----------------------------------------------------------------------------*/
62  
63  /*----------------------------------------------------------------------------
64  ; DEFINES
65  ; Include all pre-processor statements here.
66  ----------------------------------------------------------------------------*/
67  
68  /*----------------------------------------------------------------------------
69  ; EXTERNAL VARIABLES REFERENCES
70  ; Declare variables used in this module but defined elsewhere
71  ----------------------------------------------------------------------------*/
72  
73  /*----------------------------------------------------------------------------
74  ; SIMPLE TYPEDEF'S
75  ----------------------------------------------------------------------------*/
76  
77  /*----------------------------------------------------------------------------
78  ; ENUMERATED TYPEDEF'S
79  ----------------------------------------------------------------------------*/
80  
81  /*----------------------------------------------------------------------------
82  ; STRUCTURES TYPEDEF'S
83  ----------------------------------------------------------------------------*/
84  
85  
86  typedef struct
87  {
88      int16 old_exc[PIT_MAX + L_INTERPOL];  /* old excitation vector */
89      int16 ispold[M];                      /* old isp (immittance spectral pairs)*/
90      int16 isfold[M];                      /* old isf (frequency domain) */
91      int16 isf_buf[L_MEANBUF * M];         /* isf buffer(frequency domain) */
92      int16 past_isfq[M];                   /* past isf quantizer */
93      int16 tilt_code;                      /* tilt of code */
94      int16 Q_old;                          /* old scaling factor */
95      int16 Qsubfr[4];                      /* old maximum scaling factor */
96      int32 L_gc_thres;                     /* threshold for noise enhancer */
97      int16 mem_syn_hi[M];                  /* modified synthesis memory (MSB) */
98      int16 mem_syn_lo[M];                  /* modified synthesis memory (LSB) */
99      int16 mem_deemph;                     /* speech deemph filter memory */
100      int16 mem_sig_out[6];                 /* hp50 filter memory for synthesis */
101      int16 mem_oversamp[2 * L_FILT];       /* synthesis oversampled filter memory */
102      int16 mem_syn_hf[M16k];               /* HF synthesis memory */
103      int16 mem_hf[2 * L_FILT16k];          /* HF band-pass filter memory */
104      int16 mem_hf2[2 * L_FILT16k];         /* HF band-pass filter memory */
105      int16 mem_hf3[2 * L_FILT16k];         /* HF band-pass filter memory */
106      int16 seed;                           /* random memory for frame erasure */
107      int16 seed2;                          /* random memory for HF generation */
108      int16 old_T0;                         /* old pitch lag */
109      int16 old_T0_frac;                    /* old pitch fraction lag */
110      int16 lag_hist[5];
111      int16 dec_gain[23];                   /* gain decoder memory */
112      int16 seed3;                          /* random memory for lag concealment */
113      int16 disp_mem[8];                    /* phase dispersion memory */
114      int16 mem_hp400[6];                   /* hp400 filter memory for synthesis */
115  
116      int16 prev_bfi;
117      int16 state;
118      int16 first_frame;
119      dtx_decState dtx_decSt;
120      int16 vad_hist;
121  
122  } Decoder_State;
123  
124  typedef struct
125  {
126      Decoder_State state;
127      int16 ScratchMem[L_SUBFR + L_SUBFR16k + ((L_SUBFR + M + M16k +1)<<1) + \
128                       (2*L_FRAME + 1) + PIT_MAX + L_INTERPOL + NB_SUBFR*(M+1) \
129                       + 3*(M+L_SUBFR) + M16k];
130  } PV_AmrWbDec;
131  
132  
133  /*----------------------------------------------------------------------------
134  ; END
135  ----------------------------------------------------------------------------*/
136  #endif
137